Part Details | HEXAGON HEAD CAP SCREW
5305-01-175-4978 An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; and SCREW,CAP,SOCKET HEAD.
Alternate Parts: 155B78431, 155B7843-1, 114D24182, 114D2418-2, 5305-01-175-4978, 01-175-4978, 5305011754978, 011754978
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | APR 01, 1984 | 01-175-4978 | 18257 ( SCREW, CAP, HEXAGON HEAD ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5305-01-175-4978
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 155B7843-1 | 04241 | BECHTEL MARINE PROPULSIONCORPORATION |
| 114D2418-2 | 94259 | BECHTEL MARINE PROPULSIONCORPORATION |
Technical Data | NSN 5305-01-175-4978
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| THREAD LENGTH | 1.970 INCHES NOMINAL |
| FASTENER LENGTH | 5.470 INCHES MINIMUM AND 5.530 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD DIAMETER | 1.000 INCHES |
| THREAD QUANTITY PER INCH | 8 |
| THREAD CLASS | 2A |
| MINIMUM TENSILE STRENGTH | 100000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 80000 POUNDS PER SQUARE INCH |
| CRITICALITY CODE JUSTIFICATION | ZZZY |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |